gebhardt



e. F. GEBHARDT.

WINDOW VENTILATOR AND THE LIKE.

APPLICATION FILED MAY I2. 1919.

1 23,978. Patented Dec. 2, 1919.

GEORGE ncniar ennr or cinicaco, rnniircpis.

wmDow-vENTIL'ATon AND THE/LIKE.

Specification of Letters Patent.

Patented Dec. 2,1919.

' Application filed May 1.2, 1919. Serial No. 296,379.

. To all whom it may concern:

and tlielike, of

improvedconstruction of window ventilator.- The ventilator of the presentinvention' is intended for use in connection with the sash and easing of the ordinary type ofwindow construction and is so arranged that it can be set into the casing and the sash can thenbe closed down against it so as to become in efi'ect a portion of the window itself. The ventilator whenthus set into.position is held in place by the sash and conforms both in appearance and arrangement with the balance of the window construction.

Ventilators of this general type have been devised in the past, but as far as I am aware.

all such ventilators'have beemopen-to the ob]ection or disadvantage that if they have 4 served to admit the air they have In like manner served objectionably to admit sunlight or the elements.

I It happens many times, particularly in the sick room, that while it is desirable to permit the air to circulate in or out, it is undesirable to admit.-

the sunlight'through the ventilator. As far as I am aware, all ventilators of this type heretofore known have been so arranged that the sunlight can penetrate through, them ifcom'ing from the correct direction or angle. Owing to thefact that the osition of the sunis constantly changing 111 minute to minute and from hour to hour of the .day, itis practically impossible with such ventilators to so set them that they will admit the air without keeping out the sunlight at all times. r

The main object of the present invention is to provide a construction of ventilators such that whereas the air will be allowed to j freely circulate in and out at all times,'nevertheless the slats or passages w ll be so arranged that'at no time; or from: anyangle,

can the'sunlight pass directly through the.

openings and into the-room.

Other objects and uses will appear from a detail description of the invention which con sists in the features of constructionand com- U binations of parts hereinafter described and claimed. Referring to the drawing: Figure 1 shows in elevation a view of the lower portion of a window casing andvsash,-the sash having been. raised, and theyentilator of the present invention being set into position therein. Fig. 2 shows a fragmentary horizontal section taken on'the line 22 of Fig.1, lookingin the direction of the arrows.

Fig. 3' is a View similar to that of Fig. 2, with theexception that it shows a modified construction of ventilator; and,

- Figs. 4, 5, 6, 7 and 8 are views similar to I those of Figs. 2 and 3, showing-other modified forms ofconstruction. I

The ventilator as an entirety comprises a rectangular or other suitably shaped frame adapted to be set into the window casing or frame and'held in position by lowering the sash thereon. In the particular construction illustrated, the ventilator includes the side members 7 and 8, the top 9 and the bottom 10. The ventilator is set into-"the .lower portion of the window casing 11 and the sash 12 has been lowered or shut down onto it.

2, there'are provided within the frame of the ventilator a series 'of vertical plates or ,slatsfl13 and '14, the slats 13 lying: at one angle with respect to the major dimension of the frame and arallel witheach other, and the slats14= likewise lying at another. angle with respect tothe major dimension of the ventilator frame and parallel to each other. The slats 14 are so set with respect to the, passages or openings between the slats 13 that although air may freely. pass between both sets of slats, the one set complements the spaces between the slats of the otherset, so that at 'no point and from no f angle in the ventilator is it possible to see through the ventilator, nor is it possible for rays of light to pass directly thrgugh. l The arrangement shown in Fig. 318 similar to that already e cplained, with the exception that it comprises ll-shaped slats 15, the points 16 of the We lying within the extremities 17 of the adjacent ls, so that although air may pass throu hin' a zig-zag fashion, it is not possible ,or sunlight to do so. v

The arrangement shown in Fig. 4 is simi- In thev construction shown in Figs. 1 and lar to that of Fig. 3 with the exception that the end portions 18 of the VS extend in a direction parallel to the major dimension of the ventilator and overlie the tips of the. ad-

e arrangement shown in Fig. 6 is simi- I lar to those already explained. It includes a series of parallel slats 21 extending diagonally across the frame arrdhaving their end portions straightened out so that said end portions cut off any direct rays of light which might otherwise pass between the parallel slats.

The arrangements shown in Figs. 7 ahd 8 are similar to those previously explained, in the sense that the slats therein illustrated areso related to each other. that it is not possible for light'to pass directly between them from any angle. They present, however, the additional feature that' they are provided with movable'oi adjustable vanes whereby it is also possible to regulate or control the movement of air between them.

In the arrangement shown in Fig.7, there are two sets of vanes including the parallel stationary vanes '23 andthe movable oradjustable vanes 2l-. These vanes Mare pivoted-at the points 25 on which they can be swung in parallelism, as by means of a rocker arm 26. The adjustable vanes 24 serve the double purposeof preventing'the direct passage of light and also they serve ,to close the air passages to a greater or less extent.

While'I have herein shown and described only cert inembodiments of certain features of the present invention, still I wish toemphasiz'e the fact that I do not limit myself to said embodiments except as I may do so in the claim.

I claim:

As a new article of manufacture, a winv(low ventilator comprising a rectangular frame of size and form sultable to fit into the lower portion-of a window casing and be held-therein by engagement of a lowered ,sash, and a lurality of vertical vanes mounted within and extending vertically across said frame, each vane being of. V- shaped cross-section and having its end portions lying in a direction parallel to the direction of the major axis of the frame, and the open portions of all of the vanes facing toward the same side of the frame, and the ridges of the vanes lying within and be tween the ed es of the succeeding vanes,

whereby the dlrect passage of light between successive vanes is prevented, and whereby the assage of air through the ventilator 1s 'faci itated without the collection of moisture within horizontal pockets,' substan tially'as described. j v

creone'n r. GE-BHARDT; 

